Eric Robson chairs the popular horticultural forum.
Bunny Guinness, Chris Beardshaw and Bob Flowerdew answer questions posed at the annual Gardeners' Question Time Summer Garden Party, which is held at the programme's northern garden at RHS Harlow Carr in Yorkshire.
Set against the hustle and bustle of this all-day event, Peter Gibbs offers an expert's guide to running a DIY weather station, and Bob Flowerdew faces his very own scrapheap challenge - in the process, he grants an old bicycle a new lease of life. Listeners are able to extend their plant collection at the GQT Plant Swap Shop and seek expert advice at Pippa Greenwood's pest and diseases clinic.
Including Gardening weather forecast.